During recording of the second Alan Evans Trio album, the band leader encouraged and instructed the guitarist: “Come on, man, think like space funk.” Evans, who once had a band called Moon Boot Lover, has a penchant for drawing inspiration from outer space. The album, set for a March 19 release, is titled, “Merkaba,” a reference to Hebrew mysticism and heavenly palaces. While Evans was floating up there, he managed to find Curtis Mayfield, who he channeled on the tracks “Life is Harder to Live” and “Givin’ to You.” The album is a contrast to the trio’s debut, “Drop Hop,” recorded in April 2012 on the very day organ player Beau Sasser met guitarist Danny Mayer. That instrumental record has an early 1960s, raw, R&B flavor. The new one, Mayer said, “has that ‘70s vibe to it but there is no way that it could have come out of the ‘70s. It’s totally modern at the same time. There was a lot of emotional involvement on it. We went in deep on this album.” Evans, a renowned drummer and producer-engineer for his Playonbrother Studios, shows off his vocal chops by singing on some of the tracks. Moreover, “Merkaba” sends a message to music-loving earthlings, space aliens and extraterrestrials: Give Alan Evans a call. He takes requests.